Coadsorption of cyclohexanes and CO on Ni(755): Promoting effect of CO and increase of decomposition fraction by methyl substituent

Hideo Orita, Hiroshi Kondoh, Hisakazu Nozoye

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Coadsorption of methyl-substituted cyclohexanes and CO has been investigated by temperature-programmed desorption (TPD). Coadsorbed CO promotes decomposition of cyclohexanes. Decomposition fraction (ratio of decomposed molecules to adsorbed ones) of cyclohexanes was determined with changing coverages of CO and cyclohexanes. Decomposition fraction increases sharply when a tertiary C-H bond is introduced into a cyclohexane ring by methyl substitution. This is consistent with the fact that dissociation energy of a tertiary C-H bond is smaller than those of primary and secondary C-H bonds.

Original languageEnglish
Pages (from-to)592-595
Number of pages4
JournalApplied Surface Science
Volume121-122
Publication statusPublished - 1997 Nov
Externally publishedYes

Fingerprint

Cyclohexanes
Carbon Monoxide
Cyclohexane
cyclohexane
Decomposition
decomposition
Temperature programmed desorption
Substitution reactions
Molecules
desorption
dissociation
substitutes
rings
molecules

Keywords

  • CO
  • Coadsorption
  • Promoting effect on decomposition
  • Stepped surface
  • Temperature-programmed desorption

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics

Cite this

Coadsorption of cyclohexanes and CO on Ni(755) : Promoting effect of CO and increase of decomposition fraction by methyl substituent. / Orita, Hideo; Kondoh, Hiroshi; Nozoye, Hisakazu.

In: Applied Surface Science, Vol. 121-122, 11.1997, p. 592-595.

Research output: Contribution to journalArticle

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